Answer:
StartFraction one-fourth EndFraction left-parenthesis x right-parenthesis equals x left-parenthesis 30 plus 60 right-parenthesis.(x) = x(30 + 60)
Step-by-step explanation:
The equation that can be used is:
(1/4)*(30 min + 60 min + x) = x
So the correct option is the first one.
We know that Hiroshi spends:
The total time is:
30 min + 60 min + x
And we know that one-fourth of the total time that he studies is spent on math, then we can write:
(1/4)*(30 min + 60 min + x) = x
This is the equation we need to solve.
Solving it gives:
30 min + 60 min + x = 4x
90 min = 3x
(90 min)/3 = x = 30 min.
If you want to learn more about equations, you can read:
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